Start with the task, not the brand
A focused transformation and an ambiguous architectural decision demand different kinds of work. Define representative tasks before comparing agents. Keep the initial code, allowed tools and acceptance criteria comparable. Record failures and corrections as well as successful first attempts. A model that answers quickly is not necessarily the one that delivers the lowest effort for an accepted change.
Distinguish connection from role
An authorized provider connection may support several models and capabilities. The Architect and Developer can select different supported options, but the available catalog must reflect the actual account and adapter. A saved connection is not evidence that every advertised feature works in that environment. Test the tools and the required workflow rather than assuming compatibility from a familiar provider name.
Keep the handoff in the platform
Before a planned switch, capture the Product requirements, active Project scope, completed work and unresolved decisions. The next agent should receive the relevant versioned context, not a vague summary from memory. A running attempt may need a safe stop or checkpoint first. Switching accounts must not silently change the customer, funding mode or permission boundary.
Do not confuse development with runtime AI
A connection used to build software is separate from the API key used by an AI module after deployment. The customer application keeps its own credentials and pays its provider directly. A native subscription login is not automatically a runtime API credential. Plan both connection lifecycles explicitly so an engineering change cannot accidentally expose production access.
Choose by the task and the evidence
A good planning model and a good routine implementation model need not be the same. Start with the role: does it require architectural trade-offs, long codebase exploration, repetitive edits or visual review? Then check the actual supported connection, model capabilities and resource budget. Brand names alone do not establish that an adapter can perform the required workflow.
Compare a representative task using the same initial code and acceptance criteria. Count retries, failed tool calls, owner intervention and the total cost of an accepted change. A fast first response is not useful if the task requires repeated repairs or ignores a business constraint.
| Decision | Useful requirement | Evidence |
|---|---|---|
| Architect | Reason about scope and evaluate evidence. | A justified plan and independent review. |
| Developer | Implement and validate bounded changes. | An accepted diff, not just output speed. |
| Replacement | Switch only at a safe boundary. | Preserved context and explicit connection identity. |
Where this goes wrong
Provider account terms and model availability can change. Do not treat a personal subscription as a generic API credential or silently fall back to a paid key. The Product Owner should understand the selected funding mode and what happens when a quota is exhausted.
Provider choice matters most when the Product stays coherent through the change.
Turn it into a working checklist
- Compare representative tasks.
- Check actual adapter capabilities.
- Preserve versioned context at a safe boundary.
- Separate development and runtime credentials.
A concrete next step
Keep a role-choice record with model, connection, supported capabilities, budget and benchmark notes. Reevaluate when the workload changes, while retaining product decisions independently of agent memory.
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